Thomas rodgerson marsden



(No Model.)

T. R. MARSDEN. DUST TRUNK PoR GoTToN oPBNERs.

Patented May 8, 1894.

said dust boxes.

NrTsDk STATES PATENT OFFICE.

THOMAS RoDGERSoN MARSDEN, or oLDI-IAM, ENGLAND.

DUST-TRUNK FOR COTvTON-OPENERS.

SPECIFICATION forming part of Letters Patent No. 519,457, dated May 8, 1894. Application filed January 23, 1892. Serial No. 419,006. tNo model.) Patented in England April 13, 1889, No. 6,306.

To all whom it may concern.-

Beit known that I, THOMAS RoDGERsoN MARSDEN, (foreman in the employ of Messrs.` Platt Brothers and Company, Limited, of Oldham,) residing at 94 Greengate Street, Oldham, in the countyrof Lancaster, England, have invented certain new and useful Improvements in Dust-Trunks for Cotton- Openers Employed in the Preparation of Cotton and other Fibrous Materials, (for which I have obtained Letters Patent of the United Kingdom of Great Britain and Ireland, dated April 13, 1889, No. 6,306,) of which the following is a specification.

My invention relates to the dust trunks or dust chambers through or along which the cotton or other fibrous material passes in its transit from the breaking up and feeding machines to the exhaust openers or the combined exhaust openers and 4lap machines employed in the preparation of cotton and other iibrous materials.l

According to the arrangements at present in use each of such dust trunks or dust chambers is usually formed or provided with dust boxes which communicate at their upper ends with the interior of the dust trunk or dust chamber and are at their lower ends each provided with a door or doors so that the external airis prevented from being drawn into the interiors of the When cotton or other fibrous material is passing along the dust trunk or dust chamber before mentioned, dust lor dirt from the cotton orother fibrous material will fall into the dust boxes previously referred to. llhe'n` it becomes necessary or desirable to remove from the dust boxes the dust anddirt accumulated there-` in, the breaking up and feeding machine and the exhaust opener will require to be stopped. After this stoppage the doors aboveV ble to remove the accumulated dust/and dirt fibrous material passes from the breaking 4 up and feeding machine to the exhaust opener in conjunction with which such dust trunk or dust chamber is employed, and

'inarrangements by means of which the dust andv dirt separated from the cotton or other 'fibrous material may be readily removed from the receptacles or chambers in whichthey are deposited Without stopping the machines.

I employ for the purpose of conducting the cotton or other ibrous material from the breaking up and feeding machine to the exhaust opener a dust trunk or dust A chamber of any convenient form, in the lower part of which dust trunk or dust chamber I place an endless traveling cleaning lattice, which passes around two or more rollers or pulleys placed at or near the ends or in other suitable parts of the dust trunk or dust chamber. One or more or all of the rollers or pulleys before mentioned may be employed to transmit Amotion to the traveling lattice. I providethe traveling lattice with ribs or bars which act as cleaning bars. It is found that the cotton which is most heavily Weighted'with dust, dirt or other foreign matter always inds its place at the bottom of the stream of cotton passing through the trunks and is lthus caused to strike against the cleaning bars While the cotton which is.

Ymatter always finds its way to the top ofthe stream of cotton passing through the trunks. The cotton which strikes against or collides with the cleaning bars is momentarily arrested from time to time and consequently is shaken at each time that its motion is arrested and thus dust and dirtvare shaken out of the cotton or'other fibrous material. The

spaces between the cleaning bars form pockets or receptacles into which the dust, dirt or vother foreign matter separated from the cotton or other fibrous material by the cleaning bars may fall or be deposited. The movement of the endless lattice will carry with it the dust and dirt which has been deposited in the pockets or receptacles between the cleaning bars of the traveling lattice so that when the cloth'or lattice passes around the rollers or pulleys on its return j ourney,it will allow the dust or dirt to fall out of the said pockets or receptacles into the receptacle or chamber provided for it, at or near `the end of the dust trunk or dust chamber. The return movement of the lower portion of the lattice will also carry forward or remove any dust and dirt which may fall upon the vlower surface of the dust trunk or dust chamber so as to allow them to fall into a receptacle or chamber at or near the other end of the dust trunk or dust chamber. The lattice above mentioned `may be causedto move so that the upper surface of such lattice shall move in the vsame direction as the cotton or other fibrous material passing through or along the dust trunk or dust chamber or in the contrary direction.

In order to `enable the dust and dir't'deposited in the said vreceptacle or chamber or receptacles or chambers to be readily removed therefrom while the machines are at work, I provide such receptacles or chambers with suitable doors and in order to further facilitate "the ,removal from the said receptacles or chambers of the dust and dirt deposited therein Iprovide each of such receptacles or chambers Awith two doors or two sets of doors so that when one of such doors or one of such sets of doors is opened the accumulated dust and dirt will be allowed to fall into a lower portion of the receptacle or chamber from which it may be removed or allowed to fall after the said door or set of doors has been again closed. This door or set of doors having been closed the other door or set of doors may be opened to allow the dust or dirt to be removed, or the order in which the doors or sets of doors are opened or closed may be reversed. By such doors or sets of doors being opened and closed in proper order the accumulated dust or dirt will be allowed to fall and be removed fromthe said receptacle or chamber.

In the accompanying drawings Figure l. is an elevation in longitudinal section, Fig. 2 a plan, Figs. 3 and 4t cross sections, taken on the line A. B. of Figs. 1 and 2, and Fig. 5 an4 elevation in longitudinal section showing a part of the dust trunk or dust chamber. Fig. 4 only diers from Fig. 3 in that in Fig. 4 the dust trunk7 or dust chamber is shown as being rectangular in cross section, while in Fig. 3 it is. shown assemi-circular in cross section. y

According to myinvention lemploy for the purposeof conducting the cotton or other fibrous material from the breaking up and feeding machine to the exhaust opener a "f dust trunk or dust chamber (a) of anyconvenient form, having in one end an inlet lO and in the other end an outletl2.`

Within the lower part of this dust trunk or dust chamber (a) I place an endless traveling cleaning lattice (b) which passes around two rollers or pulleys (c) (c) placed at or near the ends of the dust trunk or dust chamber (a). The rollers o1' pulleys c c', which with the traveling lattice are inclosed Within the trunk or chamber a are respectively mounted upon axles (d) which are carried by and capable of being rotated in bearings secured to the dust trunk or. dust chamber (a). The lattice (b) consists of an endless cloth extending nearly the full Width ofthe dust trunk or dust chamber (a) so as to form a continuous surface and having secured to it cleaning ribs or bars (p) made of wood, metal or other suitable material and of any desired form and fixed at suitable distances from each other. The spaces between the ribs or bars when the lattice (b) is passing along its upper course form the pockets or receptacles into which the dust and dirt fall as they are separated from the cotton or other brous material while the cotton or other fibrous material is colliding with the cleaning bars (p) i'n `passing over the surface of the lattice (b). In order to keep the upper surface of the latticetb) as near astraightline as possible, I place between the rollers or pulleys (c) (c) rollers or pulleys such as (e) (e) which are mounted upon axles (e) `carried by and capable of beingrotated in bearings secured to the dust trunk or Adust chamber (a).

Fast upon the axle d of the roller (c) I mount a wheel (f) gearing into which is a worm (g) fast upon a short shaft (7L) carried by and capable of being rotated in a bracket (7c) secured to the side of the dust trunk or dust chamber (a). Fast upon the shaft (h) is a bevel wheel (Z) gearing into the bevel wheel (m) secured upon the short shaft (n) suitably mounted and 'provided with a pul-` ley (o) which receives rotary motion from any convenient source. y By this means motion is communicated to the roller (c) and thereby to the traveling lattice (b) which may be caused to revolve in the direction indicated by the arrow (D) as shown in Fig. 1, which I prefer, or in the contrary direction according as the pulley ,(0) is driven. The movement of the endless lattice (b) will carry with it the dust and dirt deposited in the pockets between the bars (p) so thatwhen the lattice (b) passes around the roller or pulley (c) on its return journey `it will allow the dust and dirt deposited in the pockets to fall into the receptacle or chamber (q) forming part of the dust trunk or dust chamber (ct), such receptacle or chamber (q) bei-ng formed at or near one end of the dust trunk or dust chamber (a). The movement of the lower portion of the lattice (b) will carry forward or remove any dust or dirt which may fall upon the lower surface (a) of the dust trunk or dust chamber (a) with which it comes in contact so as to allow such dust IOC IIO

and dirt to fall into the-receptacle or chamber (q') situate at or near the other end of the dust trunk or dust chamber (a).

In order to enable the dust and dirt deposited in the receptacles or chambers (q) (q') to be readily removed therefrom while the machines are at work, without it being necessary to stop the breaking up and feeding machine and exhaust opener and lap machine in connection with which the dust trunk or dust chamber is employed I provide each of the receptacles or chambers (q) (q') with two doors (r) (fr) between which is a chamber (w). Each of the doors (fr) (r') is secured to a shaft (s) which is supported by and capable of being turned in bearings formed upon or secured to the sides of the chambers or l receptacles (q) (q). Secured upon each of the shafts (s) (s) is a lever (t) one end of which is formed into a handle (25'). Secured upon the lever (t) is a weight (t2) which counterbalances the weight of the door (r) and tends to turn such door (r) inthe direction indicated by the arrow (E) and keeps the edge (r2) of the door (r) in contact with the rib (q2) secured to the chamber or receptacle (q)or (q'). When aquantity of dust and dirt has accumulated upon the upper surface of the door (r) the` door (r) is turned by means of the handle (15') in the direction opposite to that indicated by the arrow (E) so as to allow the dust and dirt to fall into the chamber (w) and' upon the upper surface of the door (r') which is constructed and operated like the door (r). The door (r) is then closed. The door (r) may now by means of the handle (15') be turned in the direction indicated by the arrow (F) and be caused to allow the dust or dirt to fall from the chamber (w) after which the door (r')is again closed. The above described order in which the doors (r) and (r') are opened may be reversed. By the doors (r) and (r') being opened `and closed in proper order the accumulated dust and dirt will be allowed to fall and be removed from the receptacles or chambers (q) and (q'). In some cases I, as is indicated in Fig. 5 which shows one end only of the dust trunk or dust chamber (a) dispense with one of the two doors which are shown at each end of the dust trunk or dust chamber (a) in Fig. l and in such cases when a quantity of dust and dirt has accumulated in the chamber or receptacle (q) the attendant by means of the handle (15') turns the door (r) in a direction opposite to that indicated by the arrow (E) and allows the dust or dirt to fall from the chamber or receptacle (q) upon the iioor or into a bag, or other receptacle, or the receptacle or chamber (q) may be carried down to the floor and thence into a dust chamber. When a bag is employed to receive the said dust or dirt, such bag may be hung upon hooks (g3) with which the exterior surface of the chamber or receptacle (q) is provided. When the dust or dirt has been allowed to fall from the chamber or receptacle (q) the each of the weights (t2) of such a weight that when a determined weightof dust or dirt has accumulated in the chamber or receptacle (q) 'or (q') the door (r) used with such door (r) is again closed. In some cases I form ing drawn into the dust trunk.or dust i chamber (a.) at the junctions of the ends of the traveling lattice with the framing of the dust trunk (a) when the door (r) is opened, I place at the opposite ends of the cloth or lattice (b) plates (u.) which) I secure to the dust trunk or. dust chamber (a) such plates (u) respectively extending over the spaces between the cloth or lattice (b) and the ends (g4) (g5) of the chambers or receptacles (g) (q') respectively. u

I'have above described my invention asapplied in cases in which a breaking up and feeding machine is employed to deliver the cotton or other iibrous material to a dust trunk or .dust chamber by which it is conducted to an exhaust opener or a combined exhaust `opener and lap Vmachine but in some cases I dispense with the breaking up part of the breaking up and feeding machine previously referred to, and the cotton or other fibrous material is then placed by hand upon the feeding machine or a feeding table from which it passes to the dust trunk or dust chamber.

I will here call attention to an important characteristic of this machine which is that Y the space between the upper run of the traveling lattice and the top of the dust trunk is not divided by screens, gratings or other partitions and an unobstructed passage is left within the trunk above said lattice so that the cotton or fiber passing through the lower part of the said space is free to strike against and collide with the bars of the lattice and be thereby momentarily arrested from time to time 1go/,facilitate the shaking out of the dust therefrom.V

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

l. The combination with a dust trunk having in its bottom a receptacle for dust and dirt, of a traveling lattice entirely inclosed within said trunk and having cleaning bars between which are pockets for the collection of dust and dirt to be deposited.- in said receptacle, the said trunk vhaving within it above said traveling lattice an entirely unobstructed space, substantially as herein set forth.

2. ,d The combination with a dust trunk hav- ,i

ing inone end an opening for the entrance of -1 cotton or other Iibrous material and in the other end an opening for the exit of said material and havingin its bottom near each end a receptacle for dust, of a traveling lattice inclosed Within said trunk below said inlet and outlet openings and with its ends over said receptacles, doors in said receptacles for the removal of their contents, and plates n u arranged in said trunk below said inlet and outlet openings and extending over the spaces between the ends of the traveling lattice and the ends of said receptacles, substantially as herein set forth.

3. The combination of a dust trunk, a travelin g lattice having both ends nclosed Within said trunk and having cleaning bars and pockets between said bars,` a receptacle for dust and dirt in thebottorn of said trunk and two doors in said receptacle which may be separately opened for the removal of the dust and dirt from said receptacle without interruption of the operation of the trunk, substantially as herein set forth.

THOMAS RODGERSON MARSDEN. Witnesses:

HOWARD CHEETHAM, 1S Saint Ann Sreeti llfanchester, England.`

JOHN Donn, The Holn'es, Werneth, Oldham, England. 

